Apparently I am the only person on the internet searching for ways to record mp3s and wav files onto a cassette, and not a cassette onto an mp3 or wav

Here's the why: I generally don't trust the shelf life of digital technology. So I'm gonna make hard copies of some of my favorite radio stuff / other personal recordings. All it takes is a server crash and all your work is poof. I have cassettes dating as far back as the 70s.

And this is also why you should make print copies of your favorite digital text stories too. Websites go down. Work gets lost. This has happened several times over just the last few years in this media business.